Journal ArticleDOI
Implementation of the RELAX algorithm
Zheng-She Liu,Jian Li +1 more
TLDR
This correspondence presents a zoom-FFT based RELAX algorithm for estimating sinusoidal parameters in the presence of unknown colored noise and the estimation performance of the new algorithm is only slightly degraded as compared with the original one.Abstract:
This correspondence presents a zoom-FFT based RELAX algorithm for estimating sinusoidal parameters in the presence of unknown colored noise. The amount of computations required by this algorithm is much less than the original zero-padding FFT based RELAX. Yet the estimation performance of the new algorithm is only slightly degraded as compared with the original one.read more
Citations
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Journal ArticleDOI
Sparsity and Compressed Sensing in Radar Imaging
TL;DR: The accessible framework provided by compressed sensing illuminates the impact of joining these themes and potential future directions are conjectured both for extension of theory motivated by practice and for modification of practice based on theoretical insights.
Journal ArticleDOI
Accurate Doppler Radar Noncontact Vital Sign Detection Using the RELAX Algorithm
TL;DR: Both simulated and experimental results are provided to validate the superiority of using the RELAX algorithm for accurate noncontact vital sign detection.
Journal ArticleDOI
Linear prediction approach for efficient frequency estimation of multiple real sinusoids: algorithms and analyses
TL;DR: Two constrained weighted least squares frequency estimators for multiple real sinusoids embedded in white noise are proposed, which provide nearly identical frequency estimates and their performance approaches Crame/spl acute/r-Rao lower bound for white Gaussian noise before the threshold effect occurs.
Journal ArticleDOI
ISAR Image Resolution Enhancement: Compressive Sensing Versus State-of-the-Art Super-Resolution Techniques
TL;DR: An exhaustive performance analysis is carried out along with a comparison between CS and conventional super-resolution techniques, which effectively define the performance, which is not simply based on visual inspection.
Proceedings ArticleDOI
One-bit digital radar
Jiaying Ren,Jian Li +1 more
TL;DR: A one- bit digital radar involving direct one-bit sampling with unknown dithering of the received radio frequency (RF) signal is introduced, which can be energy-efficient and low-priced.
References
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Journal ArticleDOI
Efficient mixed-spectrum estimation with applications to target feature extraction
Jian Li,Petre Stoica +1 more
TL;DR: A decoupled parameter estimation (DPE) algorithm for estimating sinusoidal parameters from both one-dimensional and two-dimensional data sequences corrupted by AR noise, which provides excellent estimation performance under the model assumptions and is robust to mismodeling errors.
Journal ArticleDOI
Angle and waveform estimation via RELAX
TL;DR: How the RELAX algorithm, recently proposed for temporal spectral analysis, can be extended to the spatial problem of angle and waveform estimation for both narrowband and wideband plane waves arriving at a uniform linear array (ULA).
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